TW202134347A - Polyamide molding compounds for hypochlorite-resistant applications - Google Patents

Abstract

The present invention relates to the use of a polyamide molding compound for application purposes in which high resistance to hypochlorous acid is crucial. The molding compound is thus used according to the invention for molded bodies suitable for being in contact with aqueous, hypochlorous acid-containing solutions.

Description

Polyamide molding compound for anti-hypochlorite applications

The present invention relates to the use of polyamide molding compounds for the purpose of application, in which high tolerance to hypochlorous acid is essential. Therefore, according to the present invention, the molding compound is used for a molded body suitable for contact with an aqueous solution containing hypochlorous acid.

EP 1 291 073 A1 relates to polyamide microcapsules (polyamide microcapsules), the polyamide microcapsules are made by combining diamines and anionic polymers and/or heteropolysaccharides in a dissolved form with an aqueous phase containing The oil phase of the dissolved dicarboxylic acid halide is contacted to form a W/O emulsion, which is hardened with a calcium salt solution, filtered, washed and dried. Polyamide microcapsules are described as stable to hypochlorite lye and used in cosmetics.

EP 3 502 188 A1 relates to a polyamide molding compound, especially for use in the field of drinking water, that is, for the production of molded parts, where, when used as intended, the processed molding compound comes into contact with drinking water. However, there is no mention of the resistance to hypochlorite, and the use of the polyamide molding compound in the molded body in contact with the hypochlorite-containing solution when used as intended.

Copolyamides suitable for producing molded bodies with high glass transition temperature, rigidity and impact resistance and low moisture absorption can be known from EP 0 469 435 A1. In addition, it exposes the health The method of producing these copolyamides and their use in producing molded bodies.

Starting from this, the object of the present invention is to find a suitable polyamide molding compound that allows the compound to be exposed to hypochlorite-containing solutions during use. In this process, the purpose of this use is to provide enhanced stability relative to the applications known from the prior art. The enhanced stability here shall mean that when the molding compound according to the present invention is stored in a hypochlorite-containing solution, the change in weight is as low as possible. In addition, in terms of mechanics, the molding compound according to the present invention is characterized by enhanced stability, especially tensile force.

This target is realized by the feature of item 1 in the scope of patent application. The ancillary claims involve favorable improvements.

Definition of terms

Used in the names and abbreviations of these polyamides and their monomers

Within the meaning of the present invention, the term "polyamide" (abbreviation: PA) should be understood to mean a general term including homopolyamides and copolyamides. The selected names and abbreviations of these polyamides and their monomers correspond to those established in the ISO standard 1874-1 (2011, (D)). The abbreviations used therein are used synonymously as the IUPAC name of the monomer in the following. In particular, the abbreviations of the monomers appearing in this application are as follows: MACM stands for bis(4-amino-3-methylcyclohexyl)methane (also known as 3 ,3'-dimethyl-4,4'-diaminodicyclohexylmethane (3,3'-dimethyl-4,4'-diaminodicyclohexylmethane), CAS No.6864-37-5), TMDC stands for double ( 4-amino-3,5-dimethylcyclohexyl)methane (bis(4-amino-3,5-dimethylcyclohexyl)methane) (also known as 3,3',5,5'-tetramethyl-4 ,4'-diaminodicyclohexylmethane (3,3',5,5'-tetramethyl-4,4'-diaminodicyclohexylmethane), CAS No.65962-45-0), PACM stands for bis(4-amino Cyclohexyl) methane (bis(4-aminocyclohexyl)methane) (also known as 4,4'-diaminodicyclohexylmethane (4,4'-diaminodicyclohexylmethane), CAS No. 1761-71-3), represented by BAC 1,3-bis(aminomethyl)cyclohexane (1,3-bis(aminomethyl)cyclohexane) (also known as 1,3-cyclohexanedimethanamine), CAS-No .2579-20-6), and represents 1,4-bis(aminomethyl)cyclohexane (1,4-bis(aminomethyl)cyclohexane) (also known as 1,4-cyclohexanedimethylamine ( 1,4-cyclohexanedimethanamine), CAS No. 2549-93-1 ) and on behalf of its mixture, IPD stands for isophorone diamine (isophorone diamine) (also known as 3-(aminomethyl)-3,5, 5-trimethylcyclohexylamine (3-(aminomethyl)-3,5,5-trimethylcyclohexanamine), 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexanamine (1 -amino-3-aminomethyl-3,5,5-trimethylcyclohexane) or cyclohexanemethanamine (cyclohexanemethanamine), 5-amino-1,3,5,5-trimethyl (5-amino-1,3, 5,5-trimethyl), CAS-Nr. 2855-13-2), T represents terephthalic acid (terephth alic acid) (CAS No. 100-21-0), I stands for isophthalic acid (CAS No. 121-95-5), 36 stands for dimerized fatty acid with 36 carbon atoms (CAS-Nr .68783-41-5 or 61788-89-4), 12 represents dodecanedioic acid (also known as 1,10-decanedicarboxylic acid), CAS No.693 -23-2), CHD stands for 1,4-cyclohexanedicarboxylic acid (CAS No.1076-97-7), 12 stands for Lactam-12 (Lactam-12) ( Also known as laurin lactam (CAS No. 947-04-6).

These amorphous or microcrystalline polyamides

The difference between these amorphous or microcrystalline polyamides in accordance with ISO 11357-2 (2013) In differential scanning calorimetry (DSC), at a heating rate of 20K/min, it is better to show no more than 28J/g, especially no more than 25J/g, and most particularly 0 to 23J/g The heat of fusion.

These microcrystalline polyamides are semi-crystalline polyamides and therefore have a melting point. However, its morphology is such that the crystallites have such a small size, and according to ASTM D 1003-13 (2013) measurement, the plate with a thickness of 2mm produced by it is still transparent, that is, it transmits light. The light transmission is at least 80%, preferably at least 85%, and particularly preferably at least 90%.

According to the present invention, the melting temperature of the microcrystalline polyamide used in the polyamide molding compound, measured according to ISO 11357-3 (2013), is preferably not greater than 255°C.

Compared with the microcrystalline polyamides, the amorphous polyamides have a lower heat of fusion. In the differential scanning calorimetry (DSC) according to ISO 11357-2 (2013), at a heating rate of 20K/min, the amorphous microcrystalline polyamides preferably exhibit no more than 5J/g The heat of fusion is particularly preferably not more than 3 J/g, and most particularly preferably 0 to 1 J/g.

These amorphous polyamides have no melting temperature due to their amorphicity.

According to ASTM D 1003-13 (2013), measured on a 2mm thick board, the amorphous polyamide is transparent, that is, its light transmittance is at least 80%, preferably at least 85%, and particularly Preferably, it is at least 90%.

Semi-crystalline polyamide

Within the meaning of the present invention, semi-crystalline polyamide means that in the differential scanning calorimetry (DSC) according to ISO 11357-2 (2013), at a heating rate of 20K/min, it preferably has at least 30J /g, particularly preferably at least 35J/g, and most particularly preferably at least 40J/g of fusion heat The polyamide. According to ASTM D 1003-13 (2013) measurement, the thickness of the board made of the semi-crystalline polyamide of 2mm is opaque, that is, its light transmittance is less than 80%, preferably less than 70%, and particularly preferably It is less than 60%.

The semi-crystalline polyamides have a melting temperature.

Dimer fatty acid

Within the meaning of the present invention, the dimerized fatty acids have at least 28 carbon atoms (C atoms). It is obtained by dimerization of unsaturated monocarboxylic acids to dicarboxylic acids, wherein the dimerization is preferably carried out by catalytic means. The dimerized fatty acids according to the present invention are dicarboxylic acids. The dimerized fatty acids are preferably partially saturated, and particularly preferably they are fully saturated.

Quantity information of these monomers

If the polyamides (A) or (B) only contain diacids and diamines, their molar fractions add up, the sum of all diamines is 50mol%, and the sum of all diacids is 50mol%, And for the polyamide, the sum of the fractions of the diamines and diacids add up to 100 mol%.

If the polyamides (A) or (B), in addition to diacids and diamines, also include x mol% of lactams or ω-amino acids, then use 100mol % Of polyamide is the benchmark, the sum of all diamines is only (50-0.5x) mol%, and the sum of all diacids is only (50-0.5x) mol%.

Regarding the quantity information of the diacids and diamines of the polyamides, it is always applicable to the sum of molar fractions of all diamines equal to the sum of molar fractions of all diacids.

General information about quantity information

The molding compound according to the present invention preferably includes ingredients (A), (B) and optionally (C) and/or (D) and/or (E). In the process, the applicable additional conditions are ingredients (A), (B) and optional (C) and/or (D) and/ Or the sum of (E) adds up to 100wt.%. The predetermined range of the quantity information of the individual components (A), (B), (C), (D) and (E) should be understood as, within the predetermined range, any quantity can be selected for each of the individual components, As long as the strict conditions are met, the total of ingredients (A), (B) and optional (C) and/or (D) and/or (E) is 100wt.%.

Hypochlorous Acid, Hypochlorite

Within the meaning of the present invention, in terms of aqueous solution or tolerance, these two terms are synonymous, because in an aqueous solution, there is an equilibrium state between these two species.

pH

7.8而言，可以得出pH值為6.8時，約80%之次氯酸和約20%之次氯酸鹽之成分。 This equilibrium state between hypochlorous acid and hypochlorite is dependent on the pH value (see Bildungskinetik von Wasserdesinfektionsnebenprodukten)-Paper by Tim Schlosser, Heidelberg ( Heidelberg) 2018, pages 36 to 37), and at a pH of 6.8, on the hypochlorous acid side. According to DIN 19643 (treatment of water in swimming pools and baths) (in the above quotation (loc cit), Figure 2.5, page 37), from the Hägg diagram, the relevant pH range is 6.5

pH

In terms of 7.8, it can be concluded that when the pH is 6.8, about 80% of hypochlorous acid and about 20% of hypochlorite are composed.

Solution containing hypochlorite

Within the meaning of the present invention, the term "hypochlorite-containing solution" includes solutions of hypochlorite ions (such as solutions of sodium hypochlorite or hypochlorous acid) in water, and therefore includes hypochlorous acid and hypochlorite. A mixture of chlorates, the concentration ratio of which depends on the pH value.

Hypochlorite storage

Within the meaning of the present invention, the term "hypochlorite storage" includes storing test specimens (tensile bars) in hypochlorite ions (such as sodium hypochlorite or A solution of hypochlorous acid) in an aqueous solution, and therefore stored in a mixture of hypochlorous acid and hypochlorite, where the concentration ratio depends on the pH value.

Therefore, the present invention relates to the use of a polyamide molding compound, which comprises or consists of: at least half of crystalline polyamide (A); and at least one amorphous or microcrystalline polyamide (B) Used to produce molded bodies that are resistant to aqueous solutions containing hypochlorous acid and/or its salts.

Tolerability means that the weight change of the stored molded body after 8064 hours of storage is no more than 12%, preferably no more than 11%, and particularly preferably no more than 11%, measured as described on page 21 Not more than 10%, and/or measured as described on page 21, after 8064 hours of storage, the tensile force of the stored molded body is the value of the tensile force of the unstored sample It is at least 70%, preferably at least 73%, and particularly preferably at least 75%.

Surprisingly, in the process of searching for a suitable polyamide to achieve the above-mentioned target, it was learned that the polyamide molding compound described in item 1 of the patent application has high resistance to solutions containing hypochlorite. Receptive and therefore suitable for the purpose according to the invention.

Therefore, according to the application of the present invention, it is preferable to make it possible to produce a molded body that is resistant to an aqueous solution containing hypochlorous acid and/or its salt.

According to a preferred embodiment of the use of the present invention, in order to provide the use of producing molded bodies, the molding system is selected from the group consisting of: parts for transporting and/or storing drinking or warm water; swimming pools , Whirlpools, heating systems or sanitary areas (kitchens, baths, Steam bath (sauna), toilet (toilet) components; faucet; accessories; housing; mixer; taps (taps); filter housing; water meter; water meter components (bearing, screw (screw), base ( pedestal)); valve; valve parts (housing, stop-off ball, gate, cylinders); distributor; cartridges; pumps; pump parts (impellers) ); viewing glasses (viewing glasses); lids; pipelines or containers (receptacles), and their parts or elements.

Regarding the use according to the present invention, it can be provided that the polyamide molding compound at least additionally contains at least one inorganic filler (C) and/or optionally, at least one additive (D), and/or optionally, at least one Different from polyamide (A), polyamide (B) and further polymer (E) different from additive (D).

In a particularly preferred embodiment of the use according to the present invention, the polyamide molding compound has the following composition: 19 to 95 wt.%, preferably 25 to 89.39 wt.%, particularly preferably 21 to 67.9 wt.% % Of at least half of the crystalline polyamide (A); 5 to 60wt.%, preferably 10 to 50wt.%, particularly preferably 15 to 30wt.% of at least one amorphous or microcrystalline polyamide ( B); 0 to 70wt.%, preferably 0.1 to 60wt.%, particularly preferably 15 to 50wt.% of at least one inorganic filler (C); 0 to 6wt.%, preferably 0.01 to 5wt.% , And particularly preferably at least one additive (D) of 0.1 to 4 wt.%; and at least one polymer of 0 to 20 wt.%, preferably 0.5 to 15 wt.%, and particularly preferably 2 to 10 wt.% (E), Ingredients (A) to (E) add up to 100wt.%.

In another use according to the present invention, it can be provided that the polyamide molding compound at least additionally contains at least one inorganic filler (C) and/or, optionally, at least one additive (D).

In another particularly preferred embodiment of the use according to the present invention, the polyamide molding compound has the following composition: 19 to 95 wt.%, preferably 25 to 89.89 wt.%, particularly preferably 31 to 69.9 wt.% of at least half of crystalline polyamide (A); 5 to 60 wt.%, preferably 10 to 50 wt.%, particularly preferably 15 to 30 wt.% of at least one amorphous or microcrystalline polyamide (B); 0 to 70wt.%, preferably 0.1 to 60wt.%, particularly preferably 15 to 50wt.% of at least one inorganic filler (C); and 0 to 6wt.%, preferably 0.01 to 5wt. %, particularly preferably 0.1 to 4wt.% of at least one additive (D); components (A) to (D) add up to 100wt.%.

The ingredients (A) to (E) are explained in detail below.

Ingredients (A)

According to a preferred embodiment of the present invention, the at least half crystalline polyamide (A), measured according to ISO 11537-3 (2013), has a melting temperature of 120 to 350°C, preferably 175 to 330°C, especially Preferably it is 280 to 325°C, and/or measured according to ISO 11537-3 (2013), the heat of fusion is at least 30J/g, particularly preferably at least 35J/g, most particularly preferably at least 40J /g, and/or according to ASTM D 1003-13(2013), the light transmittance measured on a board with a thickness of 2mm is less than 80%, preferably less than 70%, particularly preferably less than 60%.

According to another preferred embodiment of the present invention, the at least half crystalline polyamide (A) is formed from monomers (a1) to (a2), and optionally (a3):

(a1) At least one diamine, which is selected from the group consisting of 1,4-butanediamine (1,4-butanediamine), 1,5-pentanediamine (1,5-pentanediamine), 1,6-hexanediamine (1,6-hexanediamine), 1,8-octanediamine (1,8-octanediamine), 1,9-nonanediamine (1,9-nonanediamine), 1,10-decane Diamine (1,10-decanediamin), 1,12-dodecanediamine (1,12-dodecanediamine), 2-methyl-1,5-pentanediamine (2-methyl-1,5-pentanediamine) , 2-methyl-1,8-octanediamine (2-methyl-1,8-octanediamine), bis(4-amino-cyclohexyl)methane (bis(4-amino-cyclohexyl)methane), bis(4-amino-cyclohexyl)methane, bis(4-amino-cyclohexyl)methane, Bis(aminomethyl)cyclohexane, isophoronediamine and m-xylylenediamine; and

(a2) At least one dicarboxylic acid, which is selected from the group consisting of 1,6-hexanedioic acid (1,6-hexanedioic acid), 1,9-nonanedioic acid (1,9-nonanedioic acid) acid), 1,10-decanedioic acid (1,10-decanedioic acid,), 1,12-dodecanedioic acid (1,12-dodecanedioic acid), 1,13-tridecanedioic acid, 1, 14-tetradecanedioic acid (1,14-tetradecanedioic acid), 1,15-pentadecanoic acid (1,15-pentadecanoic acid), 1,16-hexadecanedioic acid (1,16-hexadecanedioic acid) , 1,17-heptadecanedioic acid (1,17-heptadecanedioic acid), 1,18-octadecanedioic acid (1,18-octadecanedioic acid), cyclohexanedicarboxylic acid (cyclohexanedicarboxylic acid), with 36 Or 44-carbon dimerized fatty acid, isophthalic acid and terephthalic acid, and/or

(a3) One or more lactams or ω-amino acids, which are selected from the following The group consisting of: lactam-6 (lactam-6), lactam-11 (lactam-11), lactam-12 (lactam-12), 1,6-aminocaproic acid (1, 6-aminohexanoic acid), 1,11-aminoundecanoic acid (1,11-aminoundecanoic acid) and 1,12-aminododecanoic acid (1,12-aminododecanoic acid).

According to a particularly preferred embodiment of the present invention, the at least half crystalline polyamide (A) is selected from the group consisting of: PA 6, PA 46, PA 49, PA 410, PA 411, PA 412, PA 413, PA 414, PA 415, PA 416, PA 417, PA 418, PA 436, PA 56, PA 510, PA 66, PA 69, PA 610, PA 611, PA 612, PA 613, PA 614, PA 615, PA 616, PA 617, PA 618, PA 1010, PA 66/6, PA 6/66/610, PA 6/66/12, PA 6/12, PA 11, PA 12, PA 912, PA 1212, PA MXD6 , PA MXD9, PA MXD10, PA MXD11, PA MXD12, PA MXD13, PA MXD14, PA MXD15, PA MXD16, PA MXD17, PA MXD18, PA MXD36, PA MXD6/MXDI, with 4T repeating unit (4T repeating unit) Amide, polyamide with 5T repeating unit, polyamide with 6T repeating unit, polyamide with 8T repeating unit, polyamide with 9T repeating unit, polyamide with 10T repeating unit, with 12T Repeating units of polyamide, PA 4T/6T, PA 4T/8T, PA 6T/8T, PA 4T/MPMDT, PA 4T/4I, PA 5T/5I, PA 6T/6I, PA 9T/MODT, PA 9T/ 9I, PA 10T, PA 10T/6T, PA 10T/6T/10I/6I, PA 12T, PA MPMDT/6T, PA 10T/10I, PA 12T/12I, PA 4T/6T/8T, PA 4T/6T/10T , PA 4T/8T/10T, PA6T/8T/10T, PA 4T/6T/MPMDT, PA 6T/6, PA 6T/66, PA 4T/66, PA 5T/66, PA 6T/6I/6, PA 10T /6T/1012/612, PA 6T/BACT, PA 6I/6T/BACI/BACT, PA 66/BAC6/MACM6, PA 66/BAC6/PACM6, PA 66/BAC6/IPD6, and their mixtures or copolymers, more Jiawei PA 6, PA 66, PA 69, PA 610, PA 612, PA 616, PA 1010, PA 66/6, PA 6/12, PA 11, PA 12, PA 1212, PA MXD6, PA MXD10, PA 6T/6I , PA 9T/MODT, PA 10T, PA 10T/6T, PA 10T/6T/10I/6I, PA 12T, PA 10T/10I, PA 6T/6, PA 6T/66, PA 10T/6T/1012/612, PA 6T/BACT, PA 6I/6T/BACI/BACT, PA 66/BAC6/MACM6, PA 66/BAC6/PACM6, PA 66/BAC6/IPD6, particularly preferably PA 6, PA 66, PA 610, PA 612 , PA 616, PA 1010, PA 66/6, PA 6/12, PA 12, PA 6T/6I, PA 10T, PA 10T/6T, PA 10T/6T/10I/6I, PA 10T/10I, PA 6T/ 6. PA 6T/66, PA 6T/6I/6, PA 10T/6T/1012/612, PA 6T/BACT, PA 6I/6T/BACI/BACT, PA 66/BAC6/MACM6.

The relative viscosity of the semi-crystalline polyamide (A) is measured in accordance with ISO 307 (2013) at 20° C., a solution of 0.5 g of polyamide in 100 ml of m-cresol (m-cresol), which is preferably 1.40 to 2.50, particularly preferably 1.45 to 2.30, and most particularly preferably 1.60 to 2.15.

Ingredients (B)

According to a preferred embodiment of the present invention, the at least one amorphous or semi-crystalline polyamide (B) is measured according to ISO 11537-3 (2013) and has a heat of fusion of not more than 28J/g, particularly preferably not More than 25J/g, most particularly preferably not more than 0 to 23J/g, and/or according to ASTM D 1003-13 (2013), the light transmittance measured on a board with a thickness of 2mm is at least 80%, which is more It is preferably at least 85%, particularly preferably at least 90%, and/or the glass transition temperature measured according to ISO 11537-2 (2013) is 60 to 240°C, preferably 80 to 230°C, particularly preferably 105 to 210°C.

According to another preferred embodiment of the present invention, the at least one amorphous or microcrystalline polyamide (B) is formed from monomers (b1) to (b2), and optionally (b3):

(b1) At least one diamine, which is selected from the group consisting of 1,6-hexanediamine (1,6-hexanediamine), 1,10-decanediamine (1,10-decanediamine), 1,12-dodecanediamine (1,12-dodecanediamine), 2-methyl-1,5-pentanediamine (2-methyl-1,5-pentanediamine), m-xylylenediamine ), bis(4-amino-3-methylcyclohexyl)methane, bis(4-aminocyclohexyl)methane , Bis(4-amino-3,5-dimethylcyclohexyl)methane (bis(4-amino-3,5-dimethylcyclohexyl)methane), as 2,2,4-trimethylhexamethylene bis Amine (2,2,4-trimethylhexamethylenediamine) bis(aminomethyl)cyclohexane ND (bis(aminomethyl)cyclohexane ND), and as 2,4,4-trimethylhexamethylenediamine (2 ,4,4-trimethylhexamethylenediamin) IND, and

(b2) At least one dicarboxylic acid, which is selected from the group consisting of: 1,6-hexanedioic acid (1,6-hexanedioic acid), 1,10-decanedioic acid (1,10-decanedioic acid) acid), 1,12-dodecanedioic acid (1,12-dodecanedioic acid), 1,14-tetradecanedioic acid (1,14-tetradecanedioic acid), 1,16-hexadecanedioic acid (1 ,16-hexadecanedioic acid), 1,18-octadecanedioic acid (1,18-octadecanedioic acid), dimerized fatty acids with 36 or 44 carbon atoms, cyclohexanedicarboxylic acid, isobenzene Dicarboxylic acid, terephthalic acid and naphthalenedicarboxylic acid; and/or

(b3) One or more endoamides or ω-amino acids, which are selected from the group consisting of endoamide-6, endoamide-11, endoamide-12, 1,6- Aminocaproic acid, 1,11-aminoundecanoic acid and 1,12-aminododecanoic acid.

According to a particularly preferred embodiment of the present invention, the at least one amorphous or microcrystalline polyamide (B) is selected from the group consisting of: PA 6I, PA 6I/6T, PA 10I/10T, PA MPMDI/MPMDT, PA 6I/6T/6N, PA MXDI/6I, PA MXDI/MXDT/6I/6T, PA MXDI/12I, PA MXDI, PA MXDI/MXD6, PA MACM10, PA MACM12, PA MACM14, PA MACM16 , PA MACM18, PA NDT/INDT, PA TMDC10, PA TMDC12, PA TMDC14, PA TMDC16, PA TMDC18, PA PACM12, PA PACM14, PA PACM16, PA PACM18, PA PACM10/11, PA PACM10/12, PA PACM12/612 , PA PACM12/PACM14/612/614, PA MACMI/12, PA MACMT/12, PA MACMI/MACM12, PA MACMI/MACMN, PA MACMT/MACM12, PA MACMT/MACMN, PA MACM36, PA TMDC36, PA MACMI/MACM36 , PA 6I/MACMI/12, PA MACMT/MACM36, PA MACMI/MACMT/MACM36, PA MACMI/MACMT/12, PA 6I/6T/MACMI/MACMT, PA 6I/6T/MACMI/MACMT/12, PA MACM6/ 11.PA MACM6/12, PA MACM10/11, PA MACM10/12, PA MACM10/1010, PA MACM12/1012, PA MACM12/1212, PA MACM14/1014, PA MACM14/1214, PA MACM16/1016, PA MACM18/ 1018, PA 6I/6T/MACMI/MACMT/MACM12/612, PA 6I/6T/MACMI/MACMT/MACM12, PA MACMI/MACMT/MACM12/12, PA MACMI/MACMT/MACM12, PA 6I/6T/MACMI/MACMT /12, PA 6I/6T/6N/MACMI/MACMT/MACMN, PA TMDC12/TMDCT/TMDC36, PA TMDC12/TMDCI, PA TMDC12/TMDCI/TMDC36, PA TM DC12/TMDCT, PA 6I/6T/BACI/BACT, PA MACMI/MACMT/BACI/BACT, PA 6I/6T/MACMI/MACMT/BACI/BACT, PA MACMI/MACMT/MACM12/MACM36, PA MACMI/MACMT/MACM14/MACM36, PA MACMI/MACMT/MACMCHD/MACM36, PA TMDCI/TMDCT/TMDC12/TMDC36, PA TMDCI/TMDCT/TMDC14/TMDC36, PA TMDCI/TMDCT/TMDCCHD/TMDC36, and mixtures or copolymers thereof, based on 100mol% of all monomers The sum of molar fractions, MACM can be replaced by PACM and/or TMDC up to 35 mol%, and/or laurin lactam can be fully or partially replaced by caprolactam ( caprolactam) substitution, and/or the dimer fatty acid with 36 carbon atoms can be fully or partially substituted by the dimer fatty acid with 44 carbon atoms, preferably PA 6I/6T, PA 10I/10T, PA MPMDI/MPMDT , PA MXDI/6I, PA MXDI/MXDT/6I/6T, PA MACM10, PA MACM12, PA MACM14, PA MACM16, PA MACM18, PA NDT/INDT, PA TMDC10, PA TMDC12, PA TMDC14, PA TMDC16, PA TMDC18, PA PACM12, PA PACM14, PA PACM16, PA PACM18, PA PACM10/11, PA PACM10/12, PA PACM12/612, PA PACM12/PACM14/612/614, PA MACMI/12, PA MACMT/12, PA MACMI/MACM12 , PA 6I/MACMI/12, PA MACMI/MACMT/12, PA 6I/6T/MACMI/MACMT, PA 6I/6T/MACMI/MACMT/12, PA MACM10/1010, PA MACM14/1014, PA 6I/6T/MACMI/MACMT/MACM12/612, PA MACMI/MACMT/MACM12, PA 6I/6T/MACMI/MACMT/12, PA TMDC12/TMDCI, PA TMDC12/TMDCI/TMDC36, PA 6I/6T/BACI/BACT, PA 6I/6T/MACMI/MACMT/BACI/BACT, PA MACMI/MACMT/MACM12 /MACM36, PA MACMI/MACMT/MACM14/MACM36, PA MACMI/MACMT/MACMCHD/MACM36, PA TMDCI/TMDCT/TMDC12/TMDC36, PA TMDCI/TMDCT/TMDC14/TMDC36, PA TMDCI/TMDCT/TMDCCHD/TMDC36, and others Mixtures or copolymers, in which, based on 100 mol% of the sum of the molar fractions of all monomers, MACM can be substituted with up to 35 mol% of PACM and/or TMDC, and/or lauryl lactam can be wholly or partly substituted Caprolactam substitution, and/or the dimer fatty acid with 36 carbon atoms can be fully or partially substituted by the dimer fatty acid with 44 carbon atoms, particularly preferably PA 6I/6T, PA 10I/10T, PA MXDI/6I, PA MACM10, PA MACM12, PA MACM14, PA MACM16, PA MACM18, PA TMDC10, PA TMDC12, PA TMDC14, PA TMDC16, PA TMDC18, PA PACM12, PA PACM14, PA PACM16, PA PACM18, PA PACM10/11 , PA PACM10/12, PA PACM12/612, PA PACM12/PACM14/612/614, PA MACMI/12, PA MACMT/12, PA MACMI/MACM12, PA 6I/MACMI/12, PA MACMI/MACMT/12, PA 6I/6T/MACMI/MACMT/MACM12/612 , PA MACMI/MACMT/MACM12, PA 6I/6T/MACMI/MACMT/12, PA TMDC12/TMDCI, PA TMDC12/TMDCI/TMDC36, PA MACMI/MACMT/MACM12/MACM36, PA MACMI/MACMT/MACM14/MACM36, PA TMDCI/TMDCT/TMDC12/TMDC36, PA TMDCI/TMDCT/TMDC14/TMDC36, and their mixtures or copolymers, wherein based on 100mol% of the sum of the molar fractions of all monomers, MACM can be up to 35mol% of PACM and / Or TMDC substitution, and/or lauryl lactam may be fully or partially substituted by caprolactam, and/or the dimer fatty acid with 36 carbon atoms may be fully or partially substituted with two of 44 carbon atoms Poly fatty acid substitution.

In these amorphous polyamides PA 6I/6T and PA 10I/10T, the content of isophthalic acid is preferably 53 to 90 mol%, and particularly preferably up to 55 to 80 mol%. Most particularly preferably, the mol ratio of isophthalic acid to terephthalic acid is 65:35 to 70:30.

In the amorphous PA MXDI/6I, the content of 1,6-hexamethylene diamine is preferably 15 to 40 mol%, and particularly preferably 20 to 35 mol%, wherein the total molar fraction of all monomers is 100 mol %. In particular, it is preferable that the molar ratio of PA MXDI/6I is 46/54.

In PA PACM12/612, the content of 1,6-hexamethylene diamine is preferably 2 to 24 mol%, and particularly preferably 6 to 15 mol%, wherein the sum of the molar fractions of all monomers is 100 mol%. Polyamide PA PACM12/612 containing up to 24 mol% of 1,6-hexamethylene diamine is microcrystalline (microcrystalline).

In PA PACM12/PACM14/612/614, the content of 1,6-hexamethylene diamine is preferably 2 to 24 mol%, and particularly preferably 6 to 15 mol%, and/or 1,14-tetradecanedioic acid The content is 2 to 24 mol%, and preferably 6 to 15 mol%, wherein the sum of the molar fractions of all monomers is 100 mol%. Polyamide PA PACM12/PACM14/612/614 containing up to 24mol% of 1,6-hexamethylenediamine is microcrystalline.

In the amorphous PA MACMI/12, the content of lauryl lactam is preferably 15 to 50 mol%, particularly preferably 20 to 40 mol%, and most particularly preferably 19 mol% or 35 mol%, in which all monomers The total mole fraction is 100mol%.

In the amorphous PA MACMI/MACMT/12, the content of isophthalic acid is preferably equal to the content of terephthalic acid and/or the content of lauryl lactam is preferably 15 to 40 mol%, and particularly preferably It is 20 to 30 mol%, and most particularly preferably the molar ratio of the repeating unit MACMI/MACMT/12 is 38/38/24, wherein the sum of the molar fractions of all monomers is 100 mol%.

In the amorphous PA MACMI/MACMT/MAMC12, the content of isophthalic acid is preferably equal to the content of terephthalic acid and/or the content of dodecanedioic acid is preferably 30 to 60 mol%, and particularly preferably It is 40 to 50 mol%, and most particularly preferably the molar ratio of the repeating unit MACMI/MACMT/MACM12 is 27/27/46, wherein the sum of the molar fractions of all monomers is 100 mol%.

In the amorphous PA 6I/6T/MACMI/MACMT/12, the content of isophthalic acid is preferably equal to the content of terephthalic acid and/or the content of lauryl lactam is preferably 1 to 25 mol%, And particularly preferably 2 to 15 mol%, and most particularly preferably repeating units The molar ratio of 6I/6T/MACMI/MACMT/12 is 34/34/14/14/4 or 39/39/9.6/9.6/2.8, and the sum of the molar fractions of all monomers is 100 mol%.

In polyamide PA MACM10/PACM10, PA MACM12/PACM12, PA MACM14/PACM14, PA MACM16/PACM16, PA MACM18/PACM18, the content of PACM is preferably 1 to 35 mol%, and particularly preferably 2 to 25 mol% , Where the sum of the molar fractions of all monomers is 100 mol%. The polyamides PA MACM10/PACM10, PA MACM12/PACM12, or PA MACM14/PACM14 PA MACM16/PACM16, PA MACM18/PACM18 containing up to 25 mol% of PACM are amorphous.

In the amorphous PA 6I/6T/MACMI/MACMT/PACMI/PACMT/12, the content of isophthalic acid is preferably equal to the content of terephthalic acid, and/or the content of lauryl lactam is preferably 2 to 15 mol%, and particularly preferably 2 to 7 mol%, and/or the content of PACM is preferably 2 to 7 mol%, wherein the sum of the molar fractions of all monomers is 100 mol%.

In the amorphous polyamide PA MACMI/MACMT/MACM12/MACM36, PA MACMI/MACMT/MACM14/MACM36, the molar fraction of isophthalic acid is preferably at least equal to the molar fraction of terephthalic acid, And the content of isophthalic acid is preferably 6 to 49.55 mol%, particularly preferably 7 to 43.5 mol%, and most particularly preferably 11.5 to 27 mol%, and/or the content of terephthalic acid is preferably 0.1 To 24.775 mol%, particularly preferably 0.5 to 22 mol%, and most particularly preferably 11.5 to 19.25 mol%, and/or the content of 1,12-dodecanedioic acid or 1,14-tetradecanedioic acid Preferably it is 0.1 to 37.75 mol%, particularly preferably 5 to 35 mol%, and most particularly preferably 10 to 25.5 mol%, and/or the content of the dimer fatty acid having 36 carbon atoms is preferably 0.25 to 10 mol %, particularly preferably 1 to 7.5 mol%, and most particularly preferably 1.5 to 4.4 mol%.

In the amorphous polyamide PA TMDCI/TMDCT/TMDC12/TMDC36, PA TMDCI/TMDCT/TMDC14/TMDC36, the molar fraction of isophthalic acid is preferably at least equal to the molar fraction of terephthalic acid, And the content of isophthalic acid is preferably 6 to 49.55 mol%, particularly preferably 7 to 43.5 mol%, and most particularly preferably 11.5 to 27 mol%, and/or the content of terephthalic acid is preferably 0.1 To 24.775 mol%, particularly preferably 0.5 to 22 mol%, and most particularly preferably 11.5 to 19.25 mol%, and/or the content of 1,12-dodecanedioic acid or 1,14-tetradecanedioic acid Preferably it is 0.1 to 37.75 mol%, particularly preferably 5 to 35 mol%, and most particularly preferably 10 to 25.5 mol%, and/or the content of the dimer fatty acid having 36 carbon atoms is preferably 0.25 to 10 mol %, particularly preferably 1 to 7.5 mol%, and most particularly preferably 1.5 to 4.4 mol%.

The relative viscosity of amorphous or microcrystalline polyamide (B) is measured in accordance with ISO 307 (2013) at 20°C, a solution of 0.5 g polyamide in 100 ml m-cresol, preferably 1.35 to 2.15, especially It is preferably 1.40 to 2.00, and most particularly preferably 1.45 and 1.90.

Ingredients (C)

The term filler (C) includes fibrous or needle-shaped fillers, particulate fillers and mixtures thereof.

The filler may preferably be coated or surface treated, that is, it may be equipped with a suitable sizing or adhesion promoter system or be surface activated in other ways. For this purpose, for example, based on urethanes, silanes, epoxides, polyamides, polyhydroxy ethers, acrylates, etc. can be used. ), or its combination or mixture System. The sizing or adhesion promoter system may also include other auxiliary substances, such as antistatic agents or lubricants.

The fibrous or needle-shaped filler is preferably selected from the group consisting of glass fiber, carbon fiber, basalt fibers, boron fibers, slag fibers, and metal fibers. ), whiskers, mineral fibers, wollastonite, aramid fibers, ground glass fibers, ground carbon fibers, frosted mineral fibers (ground mineral fibers) and mixtures thereof. The fibrous or needle-shaped filler is particularly preferably selected from the group consisting of glass fiber, carbon fiber, basalt fiber, boron fiber, aramid fiber and mixtures thereof. Most particularly preferably, glass fibers are used exclusively as fibrous or needle-shaped fillers.

As for glass fibers or carbon fibers, staple fibers or continuous filaments (rovings) can be used.

The cross-section of glass fiber or carbon fiber is ring (circular), oval, elliptical, constriction (the so-called cocoon fibers), angular (angular). ) Or rectangular. Fibers with non-annular cross-sections, and especially oval, elliptical, compressed elliptical (so-called cocoon fibers), angular or rectangular fibers, are also called flat fibers. It is also possible to use a mixture of circular and non-circular fibers.

The appearance of glass fiber can be elongated or spiral.

You can use glass fibers made of all glass types, such as A-, C-, D-, E-, E-CR-, L-, LD-, M-, NE-, S-, R-, AR- Glass or any mixtures thereof. Preferably, they are glass fibers made of E-glass, S-glass, or a mixture containing E- and/or S-glass fibers.

Staple glass fibers have a fiber length of 1 to 50 mm, particularly 1 to 25 mm, preferably 1.5 to 20 mm, particularly preferably 2 to 12 mm, and most particularly preferably 2 to 8 mm.

The glass fiber particularly has a diameter of 5 to 20 μm, preferably 5 to 15 μm, and particularly preferably 6 to 12 μm.

If the glass fiber is used as a continuous filament (roving) in a pultrusion process, it preferably has a diameter of not more than 20 μm, preferably not more than 18 μm, and particularly preferably 10 to 17 μm.

The carbon fiber particularly has a diameter of 3 to 12 μm, preferably 4 to 10 μm, and particularly preferably 4 to 9 μm.

In flat fibers, the aspect ratio, that is, the ratio of the major cross-sectional axis to the minor cross-sectional axis is 1.5 to 8, preferably 2 to 6. , Particularly preferably from 2.5 to 5, and most particularly preferably from 3 to 4.

Among these flat fibers, flat glass fibers are particularly preferred.

The cross-sectional axis length of the flat glass fiber is 3 to 40 μm. The length of the secondary cross-sectional axis is preferably 3 to 20 μm, particularly preferably 4 to 10 μm, and the length of the main cross-sectional axis is 6 to 40 μm, particularly preferably 12 to 30 μm.

The particulate filler is preferably selected from the group consisting of dolomite, silicates, quartz, talc, mica, kaolin, perlite (perlite), silica, precipitated or fumed silica, diatomaceous earth, titanium dioxide, magnesium carbonate, magnesium hydroxide magnesium hydroxide), Aluminum hydroxide, ground or precipitated calcium carbonate, chalk, lime, lime stone powder, slate powder, feldspar feldspar, barium carbonate, barium sulfate, synthetic phyllosilicates, natural phyllosilicates, permanent magnet or magnetizable Metal or alloy, glass flakes, glass spheres, hollow glass spheres, hollow silica sphere fillers and mixtures thereof. The particulate filler is particularly preferably selected from the group consisting of silicate, quartz, talc, mica, kaolin, perlite, silica, precipitated or vapor phase silica, diatomaceous earth, titanium dioxide, carbonic acid Magnesium, magnesium hydroxide, aluminum hydroxide, ground or precipitated calcium carbonate, chalk, lime, limestone powder, slate powder, feldspar, barium carbonate, barium sulfate, synthetic phyllosilicate, natural phyllosilicate, glass flakes , Glass balls, hollow glass balls, hollow silica spherical fillers and their mixtures. The particulate filler is most particularly preferably selected from the group consisting of silicate, talc, mica, kaolin, titanium dioxide, ground or precipitated calcium carbonate, chalk, limestone powder, slate powder, synthetic phyllosilicate , Natural page silicate, glass flakes, glass balls, hollow glass balls and their mixtures.

Preferably, at least one fibrous or acicular filler, or a mixture of at least one fibrous or acicular filler and at least one particulate filler is used as the filler in the polyamide molding compound according to the present invention (component (C )).

When a mixture of at least one fibrous or needle-shaped filler and at least one particulate filler is used, the content of the particulate filler accounts for no more than half of the total filler, preferably no more than one third, and particularly preferably no more than A quarter.

It is particularly preferred that the fibrous or needle-shaped filler is used exclusively as the filler in the polyamide molding compound according to the present invention.

Ingredients (D)

According to a preferred embodiment of the present invention, at least one additive (D) is selected from the group consisting of inorganic and organic stabilizers, especially antioxidants, antiozonants, and light stabilizers. stabilizers, especially UV stabilizers, UV absorbers or UV blockers, lubricants, dyes, tracers, pigments, carbon black , Graphite, graphene, carbon nanotubes, photochromic agents, antistatic agents, release agents, anti-caking additives (anti-block agents), chain-extending additives, chain-shortening additives, optical brighteners, infrared absorbers, near-infrared absorbers (NIR) absorbers) and mixtures thereof.

Among the organic stabilizers, phenol compounds, phosphite compounds, phosphonite compounds, and hindered amine-based stabilizers (HALS) are particularly preferred. ) Or a mixture thereof.

At least one additive can also be added in the form of a master batch. Preferably, polyamide is used as the base polymer of the masterbatch. The polyamide is preferably selected from the group consisting of: PA 12, PA 1010, PA 1012, PA 1212, PA 6/12, PA 612, PA MACM12 and mixtures thereof, or is composed of polyamide (A ) And/or polyamide (B) itself.

The base polymer of the masterbatch is most particularly preferably polyamide (A) or polyamide (B). body.

The present invention will be described in more detail based on the following embodiments and experiments, but does not limit the present invention to the specific embodiments shown.

Ingredients (E)

According to a preferred embodiment of the present invention, the at least one further polymer (E) is selected from the group consisting of foreign polymers, impact modifiers and mixtures thereof. The at least one further polymer (E) is particularly preferably selected from the group consisting of impact modifiers and mixtures thereof.

Measurement methods

Relative Viscosity

The relative viscosity is measured at 20°C according to ISO 307 (2007). For this purpose, weigh 0.5g of polymer particles into 100ml of m-cresol, and calculate the relative viscosity (RV) _{based on RV=t/t 0 according to Section 11 of the standard.}

Glass transition temperature (Tg) and melting temperature

According to ISO 11357-2 and -3 (2013), use particles with a water content of less than 0.1wt.% for measurement.

Differential scanning calorimetry (DSC) was performed on the two heating processes at a heating rate of 20K/min. After the first heating process, the sample was quenched in dry ice. The melting point was determined during the second heating.

The temperature of the peak maximum is designated as the melting temperature. Determine the midpoint of the glass transition range according to the "half-height" technique, which is designated as Glass transition temperature (Tg).

Change in Weight

The change in weight is measured on a stored ISO stretch rod.

The weight change of the stretch rod stored only in water is subtracted from the weight change of the stretch rod stored in the hypochlorite aqueous solution. In this way, the weight increase due to water absorption is eliminated, and water absorption also occurs during storage in an aqueous hypochlorite solution.

Tensile Force

The tensile force is measured on an ISO tensile rod (Type A1, weighing 170 x 20/10 x 4) stored in an aqueous hypochlorite solution, which is produced in accordance with the ISO/CD 3167 (2003) standard.

The measurement method is similar to the measurement method of tensile strength at 23°C according to ISO 527 (2012). For unreinforced materials, a pulling speed of 50mm/min is used, and for reinforced materials The material (reinforced materials) uses a pulling rate of 5mm/min. The absolute force is directly used as the measured value, that is, it is not divided by the cross-sectional surface of the sample.

Light Transmission

According to ASTM D 1003-13 (2013), the film is poured on a 60×60mm board (width×length) with a thickness of 2mm at 23°C and on the "Haze Gard plus" of Byk Gardner. For film gate, CIE illuminant C is used to determine the light transmittance. The light transmittance value is expressed in% of the amount of irradiated light.

Storage Conditions

The two storage types were sampled at the same time point, specifically after 1344 hours (h), 4032 hours, 5376 hours, 6720 hours and 8064 hours in each case respectively. For each material and storage time, 5 ISO stretch rods (type A1, weighing 170×20/10×4, according to the standard: produced by ISO/CD 3167 (2003)) are stored, and 5 measurements are found The arithmetic mean of the value.

Water storage is carried out in deionized water at 60°C controlled by a thermostat.

The hypochlorite is stored in the test stand of HyperDES-watertechnology GmbH in Crailsheim, Germany, in an aqueous solution of sodium hypochlorite (sodium hypochlorite) with a concentration of 10 mg/L and a volume of 100 The temperature rise is performed at 60°C controlled by a thermostat. The sodium hypochlorite solution circulates therein at a rate of 6 to 8 liters per minute (L/min), where the pH value of the solution is set to 6.8, and the conductivity is 600 to 1200 μS. During the total storage time, automatically adjust the concentration and pH of sodium hypochlorite by adding 0.5wt% sodium hypochlorite solution, 0.7wt% sodium hydroxide solution, 0.7wt% sulfuric acid or deionized water Value and conductivity. In addition, CHEMATEST 20s instrument (available from Swan Analytische Instrumente AG in Hinwil, Switzerland) is used every week, according to DIN EN ISO 7393-2 (2012), by using N,N-diethyl-1 , 4-Phenyl diamine (N, N-diethyl-1, 4-phenylenediamine) colorimetric method (colorimetric method) to check the pH value and sodium hypochlorite concentration.

Production of the Test Specimens

Use particles with a moisture content of less than 0.1wt.% to make the sample.

ISO stretch rods are manufactured on one of Arburg's model Allrounder 420 C 1000-250 injection molding machines. The rise and fall of cylinder temperatures from the feed to the nozzle are used.

Example 1 and Comparative Example 2

Cylinder temperature: 310/315/320/325/330/325℃

Mold temperature: 120℃

Examples 3, 4 and Comparative Example 5

Cylinder temperature: 320/325/330/335/340/330℃

Mold temperature: 140℃

Examples 6, 7 and 8

Cylinder temperature: 290/295/300/305/310/300℃

Mold temperature: 80℃

Unless otherwise indicated, the samples are used in a dry state; for this purpose, after the injection molding process, they are stored in a dry environment, that is, on silica gel, at room temperature for at least 48 hours.

Table 1: Materials used in Examples and Comparative Examples

Table 2: Test results-% weight change.

Table 3: Test results-the tensile force is expressed in N and in% of the initial value.

Obviously from the experiment, it was surprisingly learned that only these polyamide molding compounds containing a mixture of semi-crystalline polyamide (A) and amorphous polyamide (B) (Examples 1, 3) , 4 and 6 to 8) are stable to hypochlorite lye (hypochlorite lye).

Surprisingly, it is known that during the storage of the molded body in an aqueous solution containing hypochlorite, the polyamide containing a mixture of semi-crystalline polyamide (A) and amorphous polyamide (B) Among the molding compounds, the weight loss was significantly lower than that of the polyamide molding compounds containing only semicrystalline polyamide (A) (Comparative Examples 2 and 5) (Table 2). The reduction in weight leads to the hypothesis of oxidative degradation of the polyamide molding compound, and therefore damages the polyamide molding compound. Therefore, in the polyamide molding compound according to the embodiment of the present invention, such damage is significantly lower than that in the polyamide molding compound of the comparative example.

This result was confirmed by measuring the tensile force after contact with hypochlorite-containing solution (Table 3). After contacting with hypochlorite-containing solution, polyamide molding compound containing a mixture of semi-crystalline polyamide (A) and amorphous polyamide (B) (Examples 1, 3, 4, and 6 to 8 ), in terms of tensile force, exhibits significantly better resistance than polyamide molding compounds containing only semi-crystalline polyamide (A) (Comparative Examples 2 and 5).

Claims (15)

A use of a polyamide molding compound, the polyamide molding compound includes or consists of the following: At least half of the crystalline polyamide (A); and At least one amorphous or microcrystalline polyamide (B) Used to produce molded bodies that are resistant to aqueous solutions containing hypochlorous acid and/or its salts. According to the use described in item 1 of the scope of patent application, it is used to produce molded bodies. The molding system is selected from the group consisting of: parts for transporting and/or storing drinking or warm water; swimming pools, Parts in whirlpools, heating systems or sanitary areas (kitchens, baths, steam baths, toilets); faucets; accessories; housings; mixers; taps; filter housings; water meters; water meter components (Bearing, screw, pedestal); valve; valve parts (housing, shut-off ball, gate, cylinders); distributor; cartridges ); pump; pump components (impellers (impellers); viewing glasses; lids; pipelines or containers (receptacles), and its components or elements. The use according to any one of the aforementioned patent applications is characterized in that, measured according to ISO 11537-3 (2013), the at least half of the crystalline polyamide (A) has a melting temperature of 120 to 350°C. The use according to any one of the aforementioned patent applications, characterized in that, measured according to ISO 11537-3 (2013), the heat of fusion of the at least half of the crystalline polyamide (A) is at least 30 J/g, particularly higher It is preferably at least 35 J/g, most particularly preferably at least 40 J/g, and/or According to ASTM D 1003-13 (2013), the light transmittance measured on a board with a thickness of 2 mm is less than 80%, preferably less than 70%, and particularly preferably less than 60%. The use according to any one of the aforementioned patent applications, characterized in that the at least half crystalline polyamide (A) is formed from monomers (a1) to (a2), and optionally (a3) : (a1) At least one diamine, which is selected from the group consisting of 1,4-butanediamine (1,4-butanediamine), 1,5-pentanediamine (1,5-pentanediamine), 1,6-hexanediamine (1,6-hexanediamine), 1,8-octanediamine (1,8-octanediamine), 1,9-nonanediamine (1,9-nonanediamine), 1,10-decane Diamine (1,10-decanediamin), 1,12-dodecanediamine (1,12-dodecanediamine), 2-methyl-1,5-pentanediamine (2-methyl-1,5-pentanediamine) , 2-methyl-1,8-octanediamine (2-methyl-1,8-octanediamine), bis(4-amino-cyclohexyl)methane (bis(4-amino-cyclohexyl)methane), bis(4-amino-cyclohexyl)methane, bis(4-amino-cyclohexyl)methane, Aminomethyl) cyclohexane (bis(aminomethyl)cyclohexane), isophoronediamine (isophoronediamine) and m-xylylenediamine (m-xylylenediamine) and (a2) At least one dicarboxylic acid, which is selected from the group consisting of 1,6-hexanedioic acid (1,6-hexanedioic acid), 1,9-nonanedioic acid (1,9-nonanedioic acid) acid), 1,10-decanedioic acid (1,10-decanedioic acid,), 1,12-dodecanedioic acid (1,12-dodecanedioic acid), 1,13-tridecanedioic acid, 1, 14-tetradecanedioic acid (1,14-tetradecanedioic acid), 1,15-pentadecanoic acid (1,15-pentadecanoic acid), 1,16-hexadecanedioic acid (1,16-hexadecanedioic acid) , 1,17-heptadecanedioic acid (1,17-heptadecanedioic acid), 1,18-octadecanedioic acid (1,18-octadecanedioic acid), cyclohexanedicarboxylic acid (cyclohexanedicarboxylic acid), with 36 Or 44-carbon dimerized fatty acid, isophthalic acid and terephthalic acid, and/or (a3) One or more lactams or ω-amino acids, which are selected from the group consisting of lactam-6 (lactam-6), lactam-11 (lactam-11), Lactam-12 (lactam-12), 1,6-aminohexanoic acid (1,6-aminohexanoic acid), 1,11-aminoundecanoic acid (1,11-aminoundecanoic acid) and 1,12- Aminododecanoic acid (1,12-aminododecanoic acid). The use according to any one of the aforementioned patent applications, characterized in that the at least half crystalline polyamide (A) is selected from the group consisting of: PA 6, PA 46, PA 49, PA 410, PA 411, PA 412, PA 413, PA 414, PA 415, PA 416, PA 417, PA 418, PA 436, PA 56, PA 510, PA 66, PA 69, PA 610, PA 611, PA 612, PA 613, PA 614, PA 615, PA 616, PA 617, PA 618, PA 1010, PA 66/6, PA 6/66/610, PA 6/66/12, PA 6/12, PA 11, PA 12 , PA 912, PA 1212, PA MXD6, PA MXD9, PA MXD10, PA MXD11, PA MXD12, PA MXD13, PA MXD14, PA MXD15, PA MXD16, PA MXD17, PA MXD18, PA MXD36, PA MXD6/MXDI, with 4T Polyamide with repeating unit, polyamide with 5T repeating unit, polyamide with 6T repeating unit, polyamide with 8T repeating unit, polyamide with 9T repeating unit, polyamide with 10T repeating unit Amine, polyamide with 12T repeating unit, PA 4T/6T, PA 4T/8T, PA 6T/8T, PA 4T/MPMDT, PA 4T/4I, PA 5T/5I, PA 6T/6I, PA 9T/MODT , PA 9T/9I, PA 10T, PA 10T/6T, PA 10T/6T/10I/6I, PA 12T, PA MPMDT/6T, PA 10T/10I, PA 12T/12I, PA 4T/6T/8T, PA 4T /6T/10T, PA 4T/8T/10T, PA6T/8T/10T, PA 4T/6T/MPMDT, PA 6T/6, PA 6T/66, PA 4T/66, PA 5T/66, PA 6T/6I/ 6. PA 10T/6T/1012/612, PA 6T/BACT, PA 66/BAC6/MACM6, PA 66/BAC6/PACM6, PA 66/BAC6/IPD6, and their mixtures or copolymers. The use according to any one of the aforementioned patent applications, characterized in that, measured according to ISO 11537-3 (2013), the heat of fusion of the at least one amorphous or microcrystalline polyamide (B) is not greater than 28J/g, particularly preferably not more than 25J/g, most particularly preferably 0 to 23J/g, and/or According to ASTM D 1003-13 (2013), the light transmittance measured on a board with a thickness of 2mm is at least 80%, preferably at least 85%, particularly preferably at least 90%, and/or The glass transition temperature measured according to ISO 11537-2 (2013) is 60 to 240°C, preferably 80 to 230°C, particularly preferably 105 to 210°C. The use according to any one of the aforementioned patent applications, characterized in that the at least one amorphous or microcrystalline polyamide (B) is composed of monomers (b1) to (b2), and optionally (b3) Formed: (b1) At least one diamine, which is selected from the group consisting of 1,6-hexanediamine (1,6-hexanediamine), 1,10-decanediamine (1,10-decanediamine), 1,12-dodecanediamine (1,12-dodecanediamine), 2-methyl-1,5-pentanediamine (2-methyl-1,5-pentanediamine), m-xylylenediamine ), bis(4-amino-3-methylcyclohexyl)methane, bis(4-aminocyclohexyl)methane , Bis(4-amino-3,5-dimethylcyclohexyl)methane (bis(4-amino-3,5-dimethylcyclohexyl)methane), as 2,2,4-trimethylhexamethylene bis Amine (2,2,4-trimethylhexamethylenediamine) bis(aminomethyl)cyclohexane ND (bis(aminomethyl)cyclohexane ND), as 2,4,4-trimethylhexamethylenediamine (2, 4,4-trimethylhexamethylenediamin) The IND, and (b2) At least one dicarboxylic acid, which is selected from the group consisting of: 1,6-hexanedioic acid (1,6-hexanedioic acid), 1,10-decanedioic acid (1,10-decanedioic acid) acid), 1,12-dodecanedioic acid (1,12-dodecanedioic acid), 1,14-tetradecanedioic acid (1,14-tetradecanedioic acid), 1,16-hexadecanedioic acid (1 ,16-hexadecanedioic acid), 1,18-octadecanedioic acid (1,18-octadecanedioic acid), dimerized fatty acids with 36 or 44 carbon atoms, cyclohexanedicarboxylic acid, isobenzene Dicarboxylic acid, terephthalic acid and naphthalenedicarboxylic acid; and/or (b3) One or more endoamides or ω-amino acids, which are selected from the group consisting of endoamide-6, endoamide-11, endoamide-12, 1,6- Aminocaproic acid, 1,11-aminoundecanoic acid and 1,12-aminododecanoic acid. The use according to any one of the aforementioned patent applications, characterized in that the at least one amorphous or microcrystalline polyamide (B) is selected from the group consisting of: PA 6I, PA 6I/6T, PA 10I/10T, PA MPMDI/MPMDT, PA 6I/6T/6N, PA MXDI/6I, PA MXDI/MXDT/6I/6T, PA MXDI/12I, PA MXDI, PA MXDI/ MXD6, PA MACM10, PA MACM12, PA MACM14, PA MACM16, PA MACM18, PA NDT/INDT, PA TMDC10, PA TMDC12, PA TMDC14, PA TMDC16, PA TMDC18, PA PACM12, PA PACM14, PA PACM16, PA PACM18, PA PACM10/11, PA PACM10/12, PA PACM12/612, PA PACM12/PACM14/612/614, PA MACMI/12, PA MACMT/12, PA MACMI/MACM12, PA MACMI/MACMN, PA MACMT/MACM12, PA MACMT/MACMN, PA MACM36, PA TMDC36, PA MACMI/MACM36, PA 6I/MACMI/12, PA MACMT/MACM36, PA MACMI/MACMT/MACM36, PA MACMI/MACMT/12, PA 6I/6T /MACMI/MACMT, PA 6I/6T/MACMI/MACMT/12, PA MACM6/11, PA MACM6/12, PA MACM10/11, PA MACM10/12, PA MACM10/1010, PA MACM12/1012, PA MACM12/1212 , PA MACM14/1014, PA MACM14/1214, PA MACM16/1016, PA MACM18/1018, PA 6I/6T/MACMI/MACMT/MACM12/612, PA 6I/6T/MACMI/MACMT/MACM12, PA MACMI/MACMT/ MACM12/12, PA MACMI/MACMT/MACM12, PA 6I/6T/MACMI/MACMT/12, PA 6I/6T/6N/MACMI/MACMT/MACMN, PA TMDC12/TMDCT/TMDC36, PA TMDC12/TMDCI, PA TMDC12/ TMDCI/TMDC36, PA TMDC12/TMDCT, PA 6I/6T/BACI/BACT, PA MACMI/MACMT/BACI/BACT, PA 6I/6T/MACMI/MACMT/BACI/BACT, PA MACMI/MACMT/MACM12/MACM36, PA MACMI/MACMT/MACM14/MACM36, PA MACMI/MACMT/MACMCHD/MACM36, PA TMDCI/TMDCT/TMDC12/TMDC36, PA TMDCI/TMDCT/TMDC14/TMDC36, PA TMDCI/TMDCT/TMDCCHD/TMDC36, and their mixtures or copolymers , Wherein, based on the sum of the molar fractions of all monomers of 100 mol%, MACM can be replaced by PACM and/or TMDC up to 35 mol%, and/or Laurin lactam may be fully or partially substituted by caprolactam, and/or The dimer fatty acid having 36 carbon atoms may be substituted in whole or in part by the dimer fatty acid having 44 carbon atoms. The use according to any one of the aforementioned patent applications, characterized in that the polyamide molding compound at least additionally contains at least one inorganic filler (C) and/or, optionally, at least one additive (D) , And/or, optionally, at least one polymer (E) different from polyamide (A), polyamide (B) and another polymer (E) different from additive (D). According to the use described in the aforementioned patent application, it is characterized in that the polyamide molding compound contains at least one inorganic filler (C) selected from fibrous fillers, needle-shaped fillers, and needle-shaped fillers. fillers) and their mixtures and compositions. The use according to any one of the aforementioned two patent applications, characterized in that the polyamide molding compound contains at least one inorganic filler (C), which is selected from glass fibers, carbon fibers and mixtures thereof and A group consisting of a composition. The use according to any one of the aforementioned patent applications is characterized in that the polyamide molding compound has the following ingredients: 19 to 95 wt.%, preferably 25 to 89.39 wt.%, particularly preferably 21 to 67.9 wt.% of at least half of the crystalline polyamide (A); 5 to 60wt.%, preferably 10 to 50wt.%, particularly preferably 15 to 30wt.% of at least one amorphous or microcrystalline polyamide (B); 0 to 70wt.%, preferably 0.1 to 60wt.%, particularly preferably 15 to 50wt.% of at least one inorganic filler (C); 0 to 6 wt.%, preferably 0.01 to 5 wt.%, and particularly preferably 0.1 to 4 wt.% of at least one additive (D); and 0 to 20wt.%, preferably 0.5 to 15wt.%, and particularly preferably 2 to 10wt.% of at least one polymer (E); Ingredients (A) to (E) add up to 100wt.%. The use according to any one of the aforementioned patent applications, characterized in that the polyamide molding compound at least additionally contains at least one inorganic filler (C) and/or, optionally, at least one additive (D) . According to the use described in the scope of the aforementioned patent application, it is characterized in that the polyamide molding compound has the following ingredients: 19 to 95 wt.%, preferably 25 to 89.89 wt.%, particularly preferably 31 to 69.9 wt.% of at least half of the crystalline polyamide (A); 5 to 60wt.%, preferably 10 to 50wt.%, particularly preferably 15 to 30wt.% of at least one amorphous or microcrystalline polyamide (B); 0 to 70wt.%, preferably 0.1 to 60wt.%, particularly preferably 15 to 50wt.% of at least one inorganic filler (C); and 0 to 6wt.%, preferably 0.01 to 5wt.%, particularly preferably 0.1 to 4wt.% of at least one additive (D); Ingredients (A) to (D) add up to 100wt.%.